The effectiveness of Pt-Ir catalysts can be attributed to several factors:
High stability: Both Pt and Ir are resistant to corrosion and maintain their catalytic activity under harsh conditions. Electronic properties: The combination of Pt and Ir modifies the electronic structure, improving the adsorption and activation of reactant molecules. Thermal resistance: Pt-Ir catalysts can operate at high temperatures without significant loss of activity. Synergistic effects: The interaction between Pt and Ir atoms can create new active sites and enhance reaction kinetics.